Tyler Ward breaks down everything about Jefry Yan, the Mets' new relief pitcher whose strikeout celebrations have gone viral. #nypostsports #jefryyan #mets Subscribe and don't miss out on all the key news, highlights, and interviews about the Yankees, Mets, Giants, Jets, Knicks, Nets, Rangers, Devils, Islanders and what's buzzing in the sports world too! Catch the latest news here: nypost.com/sports Follow The New York Post Sports on: Twitter - twitter.com/nypostsports Facebook - facebook.com/nypostsports